Trayvon Martin Case

Trayvon Martin was fatally shot last month as he returned to a Sanford home during a visit from Miami. His parents, Tracy Martin and Sybrina Fulton, accused Sanford police of botching the investigation and criticized them for not arresting 28-year-old George Zimmerman, who says he shot Trayvon Martin in self-defense.

In this undated family photo, Trayvon Martin poses for a family photo. The family of the black teenager fatally shot by a white neighborhood watch volunteer arrived at Sanford City Hall Friday evening March 16, 2012 to listen to recordings of 911 calls police previously refused to release. Police agreed to release the recordings earlier that afternoon. Officials are allowing the family of 17-year-old Trayvon Martin to hear the recordings before making them public. Martin's parents previously sued to have the recordings released. A hearing for the case was scheduled for Monday. Martin was fatally shot last month as he returned to a Sanford home during a visit from Miami. His parents, Tracy Martin and Sybrina Fulton, accused Sanford police of botching the investigation and criticized them for not arresting 28-year-old George Zimmerman, who says he shot Trayvon Martin in self-defense. Martin was not armed. They say the police department hasn't arrested Zimmerman because he is white and their son was black. (AP Photo/HO, Martin Family Photos)

George Zimmerman is seen in police mug shot provided by the Orange County, Fla., Jail, via The Mimai Herald, from a 2005 arrest. Zimmerman is the neighborhood watch captain who shot unarmed teenager Trayvon Martin, 17, in a gated community in Sanford, Fla. in February 2012. (AP Photo/Orange County Jail via Miami Herald)

Phoebe Denson, left, Myrtle Hudson march towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux) NO SALES; MAGS OUT; MANDATORY CREDIT: FLORIDATODAY.COM

Rev. Glenn Dames, senior pastor at St. James AME Church, right, leads people towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux) NO SALES; MAGS OUT

Roni Houston McNeil shouts during a march towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux) NO SALES; MAGS OUT

Rev. Glenn Dames, senior pastor at St. James AME Church, leads people in a prayer at the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux)

AP Photo/Florida Today, Craig Rubadoux

People march up South Street towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux) NO SALES; MAGS OUT

Rev. Glenn Dames, senior pastor at St. James AME Church, leads people in a prayer at the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death. (AP Photo/Florida Today, Craig Rubadoux) NO SALES; MAGS OUT

Norton Bonaparte, Jr. city manager of Sanford, Fla., speaks about Trayvon Martin, an unarmed black teenager shot to death by a neighborhood watch captain on Feb. 26 in Sanford, at a news conference at the U.S. Capitol in Washington, Tuesday, March 20, 2012. (AP Photo/Jacquelyn Martin)

Sanford city councelwoman, Belma Williams cheers with a congregation of supporters , Tuesday, March. 20, 2012, in Sanford, Fla. in protest against the lack of prosecution in reference to the shooting death of 17 year old Trayvon Martin who was shot and killed by George Zimmerman a neighborhood watchman(AP Photo/Reinhold Matay)

Jeff Triplett, mayor of Sanford, Fla., right, stands next to Rep. Frederica Wilson, D-Fla., as he answers questions about Trayvon Martin, an unarmed black teenager shot to death by a neighborhood watch captain on Feb. 26 in Sanford, after a news conference at the U.S. Capitol in Washington, Tuesday, March 20, 2012. (AP Photo/Jacquelyn Martin)